2020-01-29 16:03:50 +01:00
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/* === This file is part of Calamares - <https://github.com/calamares> ===
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*
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* Copyright 2019-2020, Adriaan de Groot <groot@kde.org>
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*
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* Calamares is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Calamares is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef UTILS_ENTROPY_H
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#define UTILS_ENTROPY_H
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#include "DllMacro.h"
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#include <QByteArray>
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namespace CalamaresUtils
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{
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/// @brief Which entropy source was actually used for the entropy.
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enum class EntropySource
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{
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2020-01-29 16:08:33 +01:00
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None, ///< Buffer is empty, no random data
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2020-01-29 16:03:50 +01:00
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URandom, ///< Read from /dev/urandom
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Twister ///< Generated by pseudo-random
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};
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/** @brief Fill buffer @p b with exactly @p size random bytes
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*
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* The array is cleared and resized, then filled with 0xcb
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* "just in case", after which it is filled with random
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* bytes from a suitable source. Returns which source was used.
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*/
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DLLEXPORT EntropySource getEntropy( int size, QByteArray& b );
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} // namespace CalamaresUtils
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#endif
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